Snow plow hoist



Feb. 9, 1937. F. E. BROWN 2,070,153

SNOW PLOW HOIST Filed March 15A, 1936 2 Sheets-Sheet 1 o i# f 3L E 4a 3o g/ L z5 51| l l V 3 /7 5" si 4 I o a j 45 O II /6 \\Z 64 I| I' /0 y 502g t H Q L 4Z. J

I /Z J Feb- 9, 1937 F. E. BROWN 2,070,153

SNOW PLOW HOIST Filed March 13, 1956 2 Sheets-Sheet 2 Patented Feb. 9, 1937 y UNITED STATES PATENT OFFICE SNOW PLOW HOIST Frank E. Brown, Newton, Iowa, assignor to The Parsons Company, Newton, Iowa, a corporation of Iowa Application March 13, 1936, Serial No. 68,705 12 Claims. (Cl. 37-44) The object. of my` invention is v` to provide a Figure 6 is a sectional View on the line 6-6 of snow plow hoist of simple, durable and inexpen- Figure 3. sive construction. On the accompanying drawings I have used the A further object is to provide a snow plow hoist reference numeral lll' to indicate the hood of a so designed and mounted on the front end of a truck, the front wheels of which are indicated at 5 vehicle that part of a V-shaped snow plow can I2, and the cab thereof at I4. overhang the front end of the Vehicle, and thus A snow plow iS illustrated al? A, this DlOW being permit a very close mounting of the snow plow of the V-type having a point at I6 and wings at relative to the vehicle to minimize the distance i8. The forward end of the plow A has a shield 10 between the snow plow and the vehicle, thus re- I1. I provide a hOSl'f fOl the SHOW 910W A D- 10 ducing the weight of the apparatus necessary for cluding a main frame attached to the frame of supporting thesnow plow relative to the vehicle. the truck. This main frame includes a pair of Another object is to provide hydraulic jack vertical frame elements 22 secured to the frame l means for vertically adjusting the snow plow 20 of the truck as by plates 24 which are con- '15 relative to the vehicle, and including a cable connected with a cross bar 26. Also connected with l5 nection with the front or point of the snow plow, the cross bar are vertical frame elements 22a, and and another cable connection with the rear `therebetween the elements 22 and 22a thrust bars 28 of, these connections being either independently haVe their Teal' ends DiVOied 011 a pVOi 100111 30- or simultaneously adjustable so that the snow The front ends 0f the hluSt bars 23 are DVOSd m, plow can be tipped forwardly or rearwardly as as at 32 to brackets 34 welded or otherwise secured 20 desired, or raised vertically to an inoperative poto the snow plow A. sition. A cross bar 36 connects a pair of L-shaped Still another object is to provide a V-shaped brackets 38 together, the ends of these brackets snow plow with a cross frame and provided with being welded to the snow plow A as shown in a supporting frame for the snow plow, so ar- Figure 3. The cross bar 36 it will be noted under- 25 ranged relative to each other that the cross frame hangs the front end of the frame 20, thus percan overhang the front of the vehicle without inmitting close positioning of the snow plow A relaterfering with the operation of either the vehicle tive to the vehicle. or the snow plow adjusting means. The lower ends of the frame elements 22 and A further object is to provide a cable connec- 22a are reinforced to properly take the thrust of 30 tion at the rear of the snow plow which supports the snow plow against the thrust bars 28 by truss the wings so that they can swing laterally to conbars 40 extending at an angle from plates 42 form to the contour of the road from which the mounted on the frame 20 to plates 44 connecting snow is being plowed. the frame elementsv 22 to the forward ends of the With these and other objects in View, my intruss bars 40.

vention consists in the construction, arrangement At the upper end of the frame elements 22 there and combination of the various parts of the deis a head bar 46, a forwardly extending iframe bar vice, whereby the objects contemplated are at- 48 and suitable braces 50 and 52 to provide a suptained, as hereinafter more fully set forth, pointporting frame having a pair of hydraulic jacks 54' ed out in my claims, and illustrated in the acand 56. 40 companying drawings, in which: The jack 54 carries a pulley 58, while the front Figure 1 is a plan view of a snow plow hoist end of the frame bar 48 carries a pulley 60. A embodying my invention, showing it attached to a cable 62 is secured to a cross bar Bl oi the plow A vehicle. adjacent the point thereof by a clamp 63, as

Figure 2 is a side elevation oi the same, part shown in Figure 3, and extends over and under 45 of the snow plow blade being broken away to the pulleys 60 and 58 respectively, the other end show details of the construction of the hoist. thereof being secured by a clamp 64 (see Figure Figure 3 is a sectional view on the line 3-3 l) to the frame bar 48. of Figure 1. A second cable 66 has its ends connected to the Figure 4 is a iront elevation of the snow plow frame members 38 of the snow plow A, and its 50 hoist on the vehicle, part of the snow plow blade intermediate portion extending over a pair of being broken away. pulleys 68 and under a pulley 10. The pulleys 68 Figure 5 is a sectional View on the line 5--5 of are supported by the cross frame 46, while the Figure 2, showing details of one of the hydraulic pulley 10 is supported by the second hydraulic jacks ior adjusting one of the cables; and, jack 56. The second cable 66 is freely shiftable 55 relative to the pulleys 68 and 'l0 to permit lateral tipping of the snow plow. The frame elements 22 are provided with slots 'i2 for the cable 66 to extend through (see Figure 5).

For operating the hydraulic jacks 54 and 56, I provide an oil pump 1Q, suitable conduits 'i6 and control valves 'I8, the pump being either motor driven or hand operated, and a lever for hand operation being shown at 80. Pumps of this character are available on the market and accordingly there is no need to go into details as to their construction in the present application, it being understood that the pump and valves can be operated so that either both jacks are eX- tended simultaneously or either one extendedindividually as desired, by propel1` manipulation of the pump and valves.

By individual connections with, theA front and rear of the snow plow, and the provision of means lfor adjusting either connection individually; the

front end ,of the plow can be raised as shown by dotted lines in Figure 2, or the rear end thereof can be raised as shownby dotted lines in Figure 4, without raising the other end of the plow. This makes it possible to easily and readily adjust the plow while. it is in operation.

By operating both jacks simultaneously, the plow can be raisedV instead of tipped forwardly or rearwardly. This provides a very convenient and desirable means of adjustment for the plow, if it is necessary to quickly adjust the plow during operation as various conditions are encountered, in order to facilitate maximum eiciency and permit maximum speed of operation of the snow plow.

Handling of the snow plow is further facilitated by the underslung or underhung arrangement of the cross bar 36 relative to the vehicle. This cross bar is necessary to properly reinforce the wings I8, and if mounted ahead of the supporting frame work for the plow, it would necessarily place the snow plow much further ahead.

Some changes may be made in the construction and arrangement of the parts of my device without departing from the. real spirit and purpose ofv my invention, and it is my intention to cover by my claims any modied forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention:

1. In a snow plow hoist, a frame for attachment to the front of a vehicle, a snow plow, means of connection between said snow plow and said frame for pushing said snow plow and permitting vertical movement thereof relative to said frame and means for supporting said snow plow relative to said frame comprising an adjustable cable connection with the front thereof and an advjustable cable connection with the. rear thereof, said cable connections being independently adjustable for raising either the fre/nt or the rear of said snow plow'or for simultaneously raising both the front and the rear thereof and said adjustable cable connection with the rear thereof being shiftable to permit lateral tipping of said plow.

2. In a snow plow hoist, a frame for attachment to the front of a vehicle, a snow plow, means of connection between said snow plow and said frame for pushing said snow plow and permitting vertical movement thereof relative to said frame and means for supporting said snow plow relative to said frame comprising a cable connection with the front thereof, a cableA connection with the rear thereof which is shiftable to permit lateral tipping of said snow plow, a hydraulic jack for each cable, said cables being independently or simultaneously adjustable by manipulation of said jacks.

3. In a snow plow hoist, a frame for attachment to the front of a vehicle, a snow plow, means of connection between said snow plow and said frame for pushing said snow plow and permitting vertical movement thereof relative to said frame and means for supporting said snow plow relative to said frame comprising a pair of hydraulic jacks Vmounted on said frame, a cable connected with said snow plow at the front thereof, a second cable having its ends connected with the rear thereof, said cables being operatively connected with said jacks for take-up upon operation of the jacks, the jack for said second cable having a pulley, the intermediate portion of said second .cable'extending around said pulley and thereby shiftable relative to said jack and means for operating said jacks.

4. In a snow plow hoist, a frame attached to a vehicle, a V-shaped plow, thrust bar means of connection between said plow and said frame permitting vertical movement of the plow relative to the frame and means for supporting said plow 0n said frame comprising a cable connected with the point of said V-shaped plow, means for adjusting said cable, a second cable having its ends connected with each wing of said V-shaped plow and a second means for adjusting said second cable independently of or simultaneously with the means for adjusting the first cable, said second cable having its intermediate portion shiftable relative to said second means.

5. In a snow plow hoist, a frame attached to a vehicle, a V-shaped plow, thrust bar means of connection between said plow and said frame permitting vertical movement of the plow relative to the frame and means for supporting said plow on said frame comprising a cable connected with the point of said V-shaped plow, a hydraulic jack for adjusting said cable, a second cable connected with each wing of said V-shaped plow and a second hydraulic jack for adjusting said second cable independently of or simultaneously with the rst hydraulic jack, said second cable being shiftable relative to said second hydraulic jack to permit lateral tipping of the plow.

6. In a snow plow hoist, a frame attached to a vehicle, a V-shaped plow, thrust bar means of connection between said plow and said frame permitting vertical movement of the plow relative to the frame and means for supporting said plow on said frame comprising a connection with the point of said V-shaped plow, means for adjusting said connection, a second connection with each wing of said V-shaped plow and a second means for adjusting said second connection independently of or simultaneously with the means for adjusting the first connection, said second connection being freely shiftable to let one of said wings drop and the other rise.

'7. In a snow plow hoist, a frame attached to a vehicle, a V-shaped plow, thrust bar means of connection between said plow and said frame permitting vertical movement of the plow relative to the frame and means for supporting said plow on said frame comprising a cross frame connected with the wings of said V-shaped plow, said cross frame underhanging the end of said vehicle to which said rst frame is attached, a cable connected with the point of said V-shaped plow, means for adjusting said cable, a second cable connected with said cross frame adjacent each Wing of the plow and a second means for adjusting said second cable independently of or simultaneously with the means for adjusting the iirst cable, said second cable being freely shiftable to let one oi said wings drop and the other rise.

8. In a snow plow hoist, a frame attached to a vehicle, a V-shaped plow, thrust bar means of connection between. said plow and said frame permitting vertical movement of the plow relative to the frame and means for supporting said plow on said frame comprising a pair of downwardly extending jacks mounted at the top of said frame, a pulley carried by each jack, a rst pulley on said frame for one of said jacks, second and third pulleys on said frame for the other of said jacks, a cable connected with said frame, extending under the pulley of the rst jack and over said rst pulley and then down to the point of the V-shaped plow, a second cable extending from one wing of said V-shaped plow, over said second pulley, under the pulley oi the other jack, over the third pulley and then to the other wing of said V-shaped plow and means for adjusting said jacks.

9. In a snow plow hoist, a frame attached to a vehicle, a V-shaped plow, thrust bar means of connection between said plow and said frame permitting vertical movement of the plow relative to the frame and means for supporting said plow on said frame comprising a pair of downwardly extending hydraulic jacks mounted at the tcp cf said frame, a pulley carried by each jack, a rst pulley on said frame for one of said jacks, second and third pulleys on said frame for the other of said jacks, a cable connected with said frame, extending under the pulley of the iirst jack and over said first pulley and then down to the point of the V-shaped plow, a second cable extending from one wing of said V-shaped plow, over said second pulley, under the pulley of the other jack, over the third pulley and then to the other wing of said V-shaped plow and oil flow control means for adjusting said jacks either individually or simultaneously.

10. In a snow plow hoist, a frame attached to a vehicle, a V-shaped plow, thrust bar means of connection between said plow and said frame permitting vertical movement of the plow relative to the frame and means for supporting said plow on said frame comprising a pair of downwardly extending jacks mounted at the top of said frame, a pulley carried by each jack, a first pulley on said frame for one of said jacks, second and third pulleys on said frame for the other of said jacks, a cable connected with said frame, extending under the pulley of the first jack and over said rst pulley and then down to the point of the V-shaped plow, a second cable extending from one wing of said V-shaped plow, over said second pulley, under the pulley of the other jack, over the third pulley and then to the other wing of said V-shaped plow, means for adjusting said jacks, and a cross bar from one of said wings to the other one and extending under the end of said vehicle to which said frame is attached.

ll. In a snow plow hoist, a frame attached to a vehicle, a V-shaped plow, thrust bar means ci connection between said plow and said frame permitting vertical movement of the plow relative to the frame and means for supporting said plow on said frame comprising a pair of downwardly extending hydraulic jacks mounted at the top of said frame, a pulley carried by each jack, a rst pulley on said frame for one of said jacks, second and third pulleys on said frame for the other of said jacks, a cable connected with said frame, extending under the pulley of the iirst jack and over said rst pulley and then down to the point of the V-shaped plow,

a second cable extending from one wing of said V-shaped plow, over said second pulley, under the pulley of the other jack, over the third pulley and then to the other wing of said V-shaped plow, oil iiow control means for adjusting said jacks either individually cr simultaneously, and a cross bar from one of said wings to the other o-ne and extending under the end of said vehicle to which said frame is attached.

l2. In a snow plow hoist, a frame attached to one end of a vehicle, a V-shaped plow, thrust bars connected with the lower end of said frame and with said V-shaped plow to permit vertical movement of the plow relative to the frame, a cross bar from one wing of said plow to the other one and located behind the lower end of said frame and behind said thrust bars and thus under the end of said vehicle to which said frame is attached and means for supporting said plow on said frame comprising a cable connected with the point of said V-shaped plow, means for adjusting said cable, a second cable connected with each wing of said V-shaped plow and a second means for adjusting said second cable independently of or simultaneously with the means for adjusting the first cable, said second cable being freely shiftable to let one of said wings drop and the other rise.

FRANK E. BROWN. 

